CATSettings are encoded files created automatically by CATIA, according to your options. And yes, a back-up it wolud be good to have it when they are working properly.
A (short) list bellow
CATSettings Name Short explanation, where is located in Tools-Options...
DNavigator.CATSettings DMU Navigator (assembly design: Preview for sectioning on / off feature)
Assembly.CATSettings Options> Mechanical Design / Assembly Design / General, Constraints
CAT3DXml.CATSettings Options> General / Compatibility / 3D XML
CatalogEditor.CATSettings Settings in the catalog editor or catalog browser
CatalogOption.CATSettings Options> Infrastructure / Catalog Editor
CATAutoLogoff.CATSettings Options> General / Licensing
CATDrawing.CATSettings User settings in the Drafting workbench
CATDxfSettingsRep.CATSettings Options> General / Compatibility / DXF
CATIAV5Cache.CATSettings Options> Infrastructure / Cache Management
CATIg2SettingsRep.CATSettings Options> General / Compatibility / IGES 2D
CATMemWarning.CATSettings Options> General / General (Memory Warning)
CATPart.CATSettings Part Design settings
CATProduct.CATSettings Assembly Design settings
CATScriptUIWindow.CATSettings Macro settings (up to R16)
CATStandardViewSetting.CATSettings (up to R16)
CATStatistics.CATSettings Options> General / Statistics
CATTPSEditor.CATSettings Options> Infrastructure / Infrastructure 3D Annotations
CCDImport_Settings.CATSettings Options> General / Compatibility / CCD files
CColors.CATSettings Custom Colors (Custom Colors Table)
CGRFormat.CATSettings Options> General / Compatibility / Cgr Management (Applicative Data)
Cke.CATSettings Options> General / Parameters and Measures / Units
CkeTolerance.CATSettings Options> General / Parameters and Measures / Parameters Tolerance
ClashPublish.CATSettings Options> Digital modeling / DMU Space Analysis / DMU - overlapping process
Constraint.CATSettings Options> General / Parameters and Measures / Constraints and Dimensions
DefaultAttributesRepository.CATSettings Graphical Attributes: Default Values
DialogEditStack.CATSettings 'Panels MRU' list of values for CATIA
DialogPosition.CATSettings Positions of the toolbars
DLNames.CATSettings Options> General / Document (DL-Name: Configure ..)
DLNamesRespositorySearch.CATSettings Options> General / Document (DL-Name: Configure .. / Frame Search)
DocEnv.CATSettings Options> General / Documentaries
DocView.CATSettings Options> General / Help
DraftingOptions.CATSettings Options> Mechanical Design / Drafting
DraftingSession.CATSettings Settings in the Interactive Drafting workbench
DynLicensing.CATSettings Options> General / Shareable Products
FrameConfig.CATSettings Toolbar definitions, icons for commands (Customize..)
FrameGeneral.CATSettings Language, keyboard commands (Customize..)
GeneralPerformances.CATSettings Options> General / PCS (Undo settings)
GeometrybV4ToV5.CATSettings Options> General / Compatibility / V4/V5 SPACE
IGES.CATSettings Options> General / Compatibility / IGES
Interoperability.CATSettings Options> General / Compatibility / V4 Data Reading
Knowledge.CATSettings Options> General / Parameters and Measures / Knowledge + Knowledge Environment
LayersFilter.CATSettings Options> General / display / filtering layer
Licensing.CATSettings Options> General / General / Licensing
LinetypeRepository.CATSettings Options> General / Display / Linetype
LowGraph.CATSettings Current value GraphZoom
MaterialOptionsSettings.CATSettings Options> Infrastructure / Library Materials / Supplies
MeasureSettings.CATSettings Options> General / Parameters and Measures / Measure Tools
MigrBatch.CATSettings Options> General / Compatibility / Migration Batch
MRU.CATSettings List of recently opened files (under File menu)
MultiCAD.CATSettings Direct interface to other CAD systems
NodeCustomize.CATSettings Options> Infrastructure / Product Structure / Nodes Customization
NumberDisplay.CATSettings Options> General / Parameters and Measures / Units
Part.CATSettings Options> Infrastructure / Infrastructure Part / Display, General (Update)
PartDocument.CATSettings Options> Infrastructure / Infrastructure Part / Part Document
Print.CATSettings Setting up printers and capture options
Printers.CATSettings Options> General / Printers
ProductStructure.CATSettings Options> Infrastructure / Product Structure / Product Structure
Publish.CATSettings Options> General / Graphics Formats
Report.CATSettings Options> General / Parameters and Measures / Report Generation
Scripting.CATSettings Options> General / Macros
Search.CATSettings Options> General / Search
SearchFavoriteQueries.CATSettings Favorite list of search
SearchQueryMRU.CATSettings Recent entries in Search
SectioningRepository.CATSettings Options> Mechanical Design / Assembly Design / DMU sectioning
SelectSettings.CATSettings Options> Infrastructure / Part Infrastructure / General (Others)
SendTo.CATSettings Settings File / Send to ..
SettingsDialog.CATSettings Last viewed tab in Tools / Options ..
SettingsPublishCatalogPath.CATSettings Catalog Editor: Published catalog features
ShapeDesign.CATSettings Options> Shape / Generative Shape Design
Sketcher.CATSettings Options> Mechanical Design / Sketcher / Sketcher
SpecifV4ToV5.CATSettings Options> General / Compatibility / V4/V5 SPEC
SymbolicLinks.CATSettings Options> General / Document / Linked Document Localization (+ UUID status)
TabletSupport.CATSettings Options> General / Devices and Virtual Reality / Tablet Support
ThicknessRepository.CATSettings Options> General / Display / Font Thickness
TreeCustomize.CATSettings EditorMultiList
Tree.CATSettings Options> General / Display / Tree manipulation
V4Writing.CATSettings Options> General / Compatibility / Saving as V4 Data
VirtualReality.CATSettings Options> General / Devices and Virtual Reality Devices
VisualizationCluster.CATSettings Options> General / Devices and Virtual Reality Devices (cluster option)
VisualizationRepository.CATSettings Options> General / Display / Navigation + Performance + Visualization
VisuCustomize.CATSettings Options> Infrastructure / Product Structure / Product Visualization
VisuFilters.CATSettings Settings of the current Layer Filter
VRButtonCustomize.CATSettings Settings of the keys for space mouse
VRCommands.CATSettings Options> General / Devices and Virtual Reality Devices commands
VrmlFormat.CATSettings Options> General / Compatibility / VRML
WarmStart.CATSettings Settings for a warm start
Regards
Fernando
https://picasaweb.google.com/102257836106335725208